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16 July, 14:38

The specific heat capacity of ethanol is 2440J/kg °C. How many joules of energy will be required to heat 150g ethanol to 35°C if the starting temperature is 22°C?

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  1. 16 July, 16:00
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    Required energy = 4758 J

    Explanation:

    Specific heat capacity of a material is the amount of energy required to raise the temperature of one kilogram (kg) of that material through one degree Celsius (°C).

    Given data:

    Specific heat capacity = c = 2440 J/kg.°C

    Mass = m = 150 g = 0.15 kg

    Initial temperature = 22°C

    Final temperature = 35°C

    Change in Temperature = ΔT = 13°C

    Energy = E = ?

    Using the following formula and substituting the values, we get:

    E = m * c * ΔT

    E = 0.15 * 2440 * 13

    E = 4758 J
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